Lockheed, Raytheon Compete for Contract to Build Radar System That Would Track More Space Debris

Two of the biggest U.S. defense companies are battling for a big contract that doesn't involve foreign armies or terrorists but a less earthly threat.

The Pentagon later this month plans to award a contract for the first phase of its $6 billion project dubbed the Space Fence, a radar system that would track more of the fast-growing field of debris in space that threatens to disable or destroy satellites and manned spacecraft.